.div1{
  width: 200px;
  height: 200px;
  background: red;
  position: absolute;
  left: 0px;
  top: 0px;
  cursor: pointer;
  /*z-index: 1;*/
}
.div2{
  width: 200px;
  height: 200px;
  /*background: red;*/
  position: absolute;
  cursor: pointer;
  border: 3px dotted yellow;
  left: 0px;
  top: 0px;
}
